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Title:
SPEED FOLLOWING CONTROL METHOD AND SYSTEM FOR ADAPTIVE CRUISE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/093341
Kind Code:
A1
Abstract:
A speed following control method and system for an adaptive cruise control system, pertaining to the technical field of automated driving. The method comprises: configuring a time period length; calculating a target following speed according to a current distance between of a vehicle and a target vehicle ahead and speeds thereof; using, as a first target speed, the lowest speed between the target following speed and a configured cruise control speed; acquiring an acceleration limit according to a maximum acceleration and deceleration threshold and an acceleration change slope; calculating a second target speed at the end of the time period according to the first target speed and the acceleration limit; and compensating for target acceleration according to a difference between a current speed and the second target speed, and calculating overall driving force required by the vehicle. The second target speed and the target acceleration are acquired in real time according to the first target speed and the acceleration limit, thereby ensuring that the target acceleration and the second target speed are smoothly changed without sudden changes when the vehicle switches between a vehicle following state and a no-vehicle state, and greatly reducing speed control overshoot.

Inventors:
GUAN JIE (CN)
YIN ZHENG (CN)
NI HONGFEI (CN)
WAN SIXI (CN)
XIA RANFEI (CN)
ZHANG HAN (CN)
Application Number:
PCT/CN2020/099824
Publication Date:
May 20, 2021
Filing Date:
July 02, 2020
Export Citation:
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Assignee:
DONGFENG COMMERCIAL VEHICLE COMPANY LTD (CN)
International Classes:
B60W30/14; B60W10/06
Domestic Patent References:
WO2019008647A12019-01-10
Foreign References:
CN110816530A2020-02-21
CN110103959A2019-08-09
CN109154237A2019-01-04
CN106143488A2016-11-23
CN109774721A2019-05-21
CN106364475A2017-02-01
CN107067753A2017-08-18
CN109017784A2018-12-18
CN109421711A2019-03-05
JP2005028995A2005-02-03
JP2015129701A2015-07-16
DE102009018006A12009-12-24
Attorney, Agent or Firm:
HUBEI JINGHONG LAW FIRM (CN)
Download PDF:
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